The Nut,self-Locking,clinch, cataloged under National Stock Number 5310-00-005-0525, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. Government technical data includes 19 specifications, cited from the U.S. Government catalog. 4 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5310-00-005-0525 |
| Item Name | Nut,self-Locking,clinch |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Status | ACTIVE |
| Width Across Flats | 0.438 INCHES NOMINAL IN |
| Surface Treatment Document and Classification | QQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE OVERALL EXCEPT INSERT |
| Thread Series | UNJC |
| Temp Rating | 250.0 FAHRENHEIT NOMINAL DEGF |
| Material Document and Classification | AISI 303 ASSN STD 1ST MATERIAL RESPONSE NUT |
| Nut Counterbore Depth | 0.189 INCHES MINIMUM AND 0.201 INCHES MAXIMUM NUT IN |
| Thread Direction | RIGHT-HAND |
| Nominal Thread Size | 0.250 INCHES IN |
| Counterbore Diameter | 0.280 INCHES NOMINAL NUT IN |
| Pilot Diameter | 0.359 INCHES NOMINAL IN |
| Pilot Length | 0.195 INCHES NOMINAL IN |
| Locking Feature | PREVAILING TORQUE WITH NONMETALLIC INSERT |
| Nut Height | 0.508 INCHES NOMINAL IN |
| Surface Treatment | PASSIVATE OVERALL EXCEPT INSERT |
| Nut Style | CLINCH |
| Thread Class | 3B |
| Thread Quantity Per Inch | 20 |
| Material | STEEL COMP 303 NUT |
| Material | PLASTIC LOCKING INSERT |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Reference | Meaning |
|---|---|
| M45938/8-7C | 2/2 Government specification standardization U.S. Government activity |
| G231340-51 | 5/9 Secondary reference Lucent Technologies Inc Advanced Technology Systems |
| 79NC6-040 | 5/1 Secondary reference Esna, Llc |
| 79NC6-040 | 5/9 Secondary reference Harvard Industries Inc |
NSN 5310-00-005-0525 is a Nut,self-Locking,clinch, classified under FSC 5310, Nuts and Washers. Status: active.
Key specifications for 5310-00-005-0525: Width Across Flats: 0.438 INCHES NOMINAL IN; Surface Treatment Document and Classification: QQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE OVERALL EXCEPT INSERT; Thread Series: UNJC; Temp Rating: 250.0 FAHRENHEIT NOMINAL DEGF. 19 specifications are documented in the U.S. Government catalog.
No hazard code in the DLA record (HMIC N). Hazard information on this page is shown exactly as it appears in the DLA record.
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-16.
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.